Is SCRIB p.Ala770Val (c.2309C>T) pathogenic?

SCRIB p.Ala770Val (c.2309C>T) is classified Uncertain significance in SCRIB (ClinVar, Single submitter, 1 submitter; last evaluated 2025-02-20). AlphaMissense: ambiguous (0.4981); Ultra-rare (popmax 0.0254%, afr).

How common is SCRIB p.Ala770Val (c.2309C>T) in the general population?

SCRIB p.Ala770Val (c.2309C>T) is ultra-rare (popmax 0.0254%, afr) (gnomAD).

What do computational predictors say about SCRIB p.Ala770Val (c.2309C>T)?

AlphaMissense predicts ambiguous (score 0.4981) — an in-silico prediction, not a clinical call.

SCRIB p.Ala770Val

c.2309C>T · VCV3793316

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4981 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0254%, afr)

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense indeterminate

Computational evidence

Protein change
AlphaMissense	0.4981	ambiguous
REVEL	0.276	benign-leaning
SaProt	LLR -8.84	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense is indeterminate.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP 12	GERP 1.5, phastCons 1
Regional constraint	o/e 1.13	unconstrained · MANE · 20 kb · p 9.1e-08 · regional, not allelic
Overall
CADD	24.5	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0254% African / African-American · 19/74,750 alleles

Filtering AF 0.0166% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0138%

Overall 0.00137% 22/1,606,126 alleles · ultra-rare exomes 10/1,453,894 · genomes 12/152,232 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0254%	3,934
European (non-Finnish)	0.000255%	392,120

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: SCRIB
Protein: p.Ala770Val
Coding: c.2309C>T
MANE Select: NM_182706
Type: single nucleotide variant
Location: chr8:143806444 (GRCh38)
Gene constraint: LOEUF 0.684 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 52.33 · 42 PDB
Residue 770: an α-helix; the pdz 1 domain; the 'sufficient for targeting to adherens junction and to inhibit cell proliferation' region; the 'interaction with arhgef7' region; the 'required for interaction with vim' region

Full SCRIB gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

SCRIB c.3120+10C>G Benign/Likely benign ★★ same type
SCRIB c.504-9C>T Benign ★★ same type
SCRIB p.Ala1488= Likely benign ★★ same type
SCRIB p.Arg492= Benign ★★ same type
SCRIB p.Asn647= Benign/Likely benign ★★ same type
SCRIB p.Leu254= Benign ★★ same type
SCRIB p.Phe571= Benign ★★ same type
SCRIB p.Pro1343= Benign ★★ same type

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/scrib-p-ala770val (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown